i've recently configured a server and after a bit i decided to deny everyone that use a proxy in my Ts3 server, i tried to search some iptables module but nothing, then i'm searching for something like a global proxy list, i'm asking if there's a method to deny all connection from a proxy to my server using iptables or some other program.
Solved, i just installed a firewall software such as waf or apf and used their settings to block some whole range of ips, now everything is working well!